Hi, my baby has had a really red rashy patch under his chin and in the creases of his ankles and elbows. We've tried numerous lotions and creams, one doctor diagnosed it as exezma and gave us hydrocortison cream which cleared it up for a few days but has since reappeared. Second visit to a different doctor said it was dermatitis. Keep him as dry as possible but does anyone know if using Vaseline would help at all?